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PLS ANSWER THIS FAST......................I WILL MRK IT AS BRAINLIEST!!!The perimeter of an equilateral triangle is 54cm.find its area

Answer»

Equilateral TRIANGLE ⇒ All sides are the same

length = 54 ÷ 3 = 18 cm


Formula: AREA = 1/2 absin(c)

Area = 1/2 (18)(18) sin(60) = 81√3 cm² or 140.30 cm² (nearest HUNDREDTHS)


Answer: 140.30 cm²



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